#VU107743 Improper locking in Linux kernel - CVE-2025-22111

Vulnerability identifier: #VU107743

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-22111

CWE-ID: CWE-667

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper locking within the sock_write_iter(), brioctl_set(), br_ioctl_call(), sock_ioctl() and compat_sock_ioctl_trans() functions in net/socket.c, within the dev_ifsioc() and dev_ioctl() functions in net/core/dev_ioctl.c, within the old_deviceless() and br_ioctl_stub() functions in net/bridge/br_ioctl.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.14, 6.14.1

---

External links
https://git.kernel.org/stable/c/00fe0ac64efd1f5373b3dd9f1f84b19235371e39
https://git.kernel.org/stable/c/ed3ba9b6e280e14cc3148c1b226ba453f02fa76c
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14.2

---

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.